期刊
CHINESE JOURNAL OF AERONAUTICS
卷 34, 期 8, 页码 192-201出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cja.2020.08.044
关键词
Al texture; Hot roll bonding; Interfacial microstructure; Mechanical property; Ti; Al; Mg laminated sheet
资金
- National Natural Science Foundation of China [51421001]
- National High Technology Research and Development Program of China (863 Program) [2013AA031304]
- Fundamental Research Funds for the Central Universities of China [2019CDQYCL001, 2019CDCGCL204, 2020CDJDPT001]
- Research Project of State Key Laboratory of Vehicle NVH and Safety Technology of China [NVHSKL-201706]
Ti/Al/Mg laminated composites were successfully fabricated by hot roll bonding, with the effects of rolling reduction on microstructural evolution and mechanical properties explored. The results demonstrated good interfacial bonding in the laminated sheets, with significant impact of rolling reduction on deformation inhomogeneity through the Al layer thickness.
Ti/Al/Mg laminated composites were successfully fabricated by hot roll bonding. The effects of the rolling reduction on the microstructural evolution and mechanical properties of the composites were explored. The results show that Ti/Al/Mg laminated sheets exhibit good interfacial bonding. The rolling reduction has a significant effect on the deformation inhomogeneity through the thickness of the Al layer. The initial grains of the Al layer near the Ti/Al interface are fragmented into fine equiaxed grains, and the grains at the center and near the Al/Mg interface are elongated. The R-cube shear texture of the Al layer forms near the Ti/Al interface and permeates into the center layer in the samples with greater rolling reductions. The b-fiber rolling texture of the Al layer is observed near the Al/Mg interface and increases with the increase of rolling reduction. The stress-strain curves indicate that the fracture appears first in the Mg layer. With the increasing rolling reduction, the ultimate tensile and yield strength values increase, and the elongation up to the Mg layer fracture decreases. (c) 2020 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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